| 宽动态范围读出电路研究 |
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| 引用本文： | 韩建强,郭方敏.宽动态范围读出电路研究[J].半导体技术,2011,36(1):41-44. |
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| 作者姓名： | 韩建强 郭方敏 |
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| 作者单位： | 华东师范大学信息学院教育部极化材料与器件重点实验室; |
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| 基金项目： | 科技部重大项目(2006CB932802) |
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| 摘 要： | 为提高光电探测器的读出性能,设计的电容互阻放大器(CTIA)注入效率大于99%,线性度达99.84%。相关双采样电路(CDS)采用不同控制时序,读出电路可以工作在噪声抑制模式和两次采样模式。噪声抑制模式时读出电路平均噪声为0.91 mV,动态范围为66.85 dB,两次采样模式平均噪声为5.82 mV,动态范围扩展到90.82 dB。
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| 关 键 词： | 光电探测器 读出电路 电容互导放大器 噪声 动态范围 |
Research of High Dynamic Range Readout Circuits |
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| Han Jianqiang,Guo Fangmin.Research of High Dynamic Range Readout Circuits[J].Semiconductor Technology,2011,36(1):41-44. |
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| Authors: | Han Jianqiang Guo Fangmin |
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| Affiliation: | Han Jianqiang,Guo Fangmin(Key Laboratory of the Ministry of Education Polarization Materials and Devices,School of Information Sciences and Technology,East China Normal University,Shanghai 200241,China) |
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| Abstract: | To improve photodetector read out performance,the inject efficiency of the designed capacitance transimpedance amplifier(CTIA) is better than 99% and linearity reaches 99.84%.Correlated double sampling circuit(CDS) adopts different control timings,the readout circuit can operate in noise suppressing mode,the or dual sampling mode.Under noise suppressing mode,the average noise of the readout circuit is 0.91 mV and dynamic range is 66.85 dB.In dual sampling mode average noise is 5.82 mV and dynamic range exte... |
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| Keywords: | photodetector readout circuit capacitance transimpedance amplifier(CTIA) noise dynamic range |
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